Trigger mechanism and safety device therefor



NW. 27, 1923. Y 1,475,310

E. E. MILLER TRIGGER MECHANISM AND SAFETY DEVICE THEREFOR Filed April 26, 1922 2 Sheets-Sheet 1 anon Moan WKZFMZI v I I Wmtd E. E. MILLER TRIGGER MECHANISM AND SAFETY DEVICE THEREFOR Nov. 27

Filed April 26.

1922 2 Sheets-Sheet Z Patented Nov. 27, 1923.

FFIC.

ELMEE E. IVIILLER, OF MILLERSBURG, PENNSYLVANIA.

TRIGGER MECHANISM AND SAFETY DEVICE THEREFOR.

Application filed April 26, 1922.

To all whom it may concern Be it known that I, ELMER E. MILLER, a citizen of the United States, residing at Millersburg, in the county of Dauphin and State of Pennsylvania, have invented certain new and useful Improvements in Trigger Mechanisms and Safety Devices Therefor, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to single trigger firing mechanism for double barrel guns of that type wherein the trigger mechanism may be such to fire either barrel by a pull upon the trigger, a second pull upon the trigger acting to fire the other barrel.

In guns of this character there is liability of double firing and balking, and one of the objects of the present invention is to pro vide single trigger actuated firing mechanism including means whereby double firing and balking are prevented.

further object of this invention is to provide means for causing the firing of either barrel upon one actuation of the trigger and the firing of the other barrel upon a second actuation of the trigger, which means may be set to a safety position which will prevent the firing of either barrel, and further which means is so constructed that when it is shifted as far as possible toward the muzzle of the gun and the gun is broken for loading, the hammer is thereby cooked and the gun is again closed and the setting mechanism will be automatically shifted to a safety position, thus doing away with the necessity of delicately shifting this safety mechanism to its safety or intermediate position before breaking the gun and cooking it but making it only necessary for the operator to push the setting mechanism to the full extent of its movement from the muzzle of the gun and without having to note the particular position of the setting mechanism.

A still further object of the invention is to provide operative connections between the barrel locking mechanism and the setting device for automatically shifting the setting device to its neutral or safety position to prevent actuation of the trigger provided the setting device has been initially shifted as far as possible toward the muzzle of the barrel.

In the Patent No. 1,356,779, issued Oc- Serial No. 556,724.

tober 26, 1920, to Elmer E. Miller, the construction of the sear operating swivel and the means for preventing double firing, and also the safety device is relatively more or less complicated, the various parts being more delicately mounted, therefore apt to become disarranged. In fact in this patent the sear trip is mounted upon the breech casing, and is actuated from one side or the other of the trigger for the purpose of operating one or the other of the scars, Whereas in the present invention, the trip is operatively mounted upon the trigger, simplifying the construction, and yet at the same time producing a more positive operating device for the sears. Furthermore the gravity member or weight in said patent for preventing double firing is controlled by the discharge and shock, and also the rebound of the gun, and while this construction is not absolutely impractical, it has been found that it does not, at all times give the best results.

The present invention does away with the weight or gravity actuated member for preventing double firing, and in lieu thereof there is substituted an inertia actuated member under tension of a light spring, for preventing double firing. While the double firing preventing device in the present case is actuated or controlled by the discharge and shock and the rebound of the gun, the light spring assists materially in controlling the action of the inertia actuated member, so as to render it more positive, and therefore prevent double action on the single trigger, as a result of the shock and the rebound of the gun in connection with the muscular contraction of the hand.

Other objects will appear in the course of the following description.

It is to be understood that the particulars herein given are in no way limitative and that while still keeping within the scope of the invention, any desired modifications of detail and desired proportions may be made in the apparatus according to circumstances.

The invention comprises further features and combination of parts, as will be hereinafter set forth, shown in the drawings and claimed.

In the drawings:

Figure l is a view of a gun, especially a portion of the breech casing with one of its plates removed, and showing the mounting and arrangement of the single trigger actuated mechanism, parts being in elevation;

Figure 2 is a similar view showing the opposite plate of the breech casing removed, showing the mechanism in elevation from the opposite side;

Figure 3 is a detail perspective view of the single trigger mechanism removed from the casing, showing the safety device in position for firing the right hand barrel;

Figure 1 is a perspective view of the trigger, showing the safety device as having been positioned for shifting the sear trip to actuate the left hand barrel;

Figure 5 is a viewin elevation of a portion of the trigger mechanism as shown in Figure 1, illustrating the trigger as being held to prevent it from returning to its normal position as a result of muscular contraction of the hand;

Figure 6 is a cross sectional view of a portion of the breech casing, showing the trip in a position for actuating the left hand sear, whereby the left hand barrel may be fired;

Figure 7 is a cross sectional view of a portion of the breech casing showing the trip positioned for actuating the right hand sear, whereby the right hand barrel may be fired;

Figure 8 is a detail view of one of the hammers and its actuating sear;

Figure 9 discloses detail views of parts of the lock between the breech casing and the barrels of the gun;

Figure 10 is a horizontal longitudinal sectional view through a portion of the breech casing, showing the improved. trigger mechanism;

Figure 11 is a detail plan view of the safety thumb slide, showing the letters R, S and L, standing for right barrel, safety and left barrel;

Referring to the drawings 1 designates the breech casing of a double barrel shot gun and mounted in the casing are the right and left hammers 2 and 3. Also mounted in the casing are the right and left hammer operating sears and 5, which are under tension of the springs 6 and 7.

As shown in the drawings, the breech cas ing is connected to the barrels of the gun by means of a pivot (not shown), but of the usual construction, and in order to lock the breech casing to the barrels of the gun, the usual lock 8 is provided, shown in Figures 1 and 2. The upper end of this breech lock has a shoulder 9, which cooperates with a slide bar 10, which in turn a'ctuates a safety slide bar 11. The slide bar 10 is mounted in a guide groove in the under surface of the upper wall of the breech casing. hen the lock lever 12, which is connected to the lock 8 in the usual manner is moved, to unlock the breech from the barrels of the gun,

the shoulder 9 cooperates with the bar 10, and imparts a rearward movement thereto. Further reference to the lock bar 10 will be made during the description of the safety device to be hereinafter set forth.

Rising from the lower wall of the breech casing is a trigger mount13, which comprises spaced walls 14. Pivotally mounted at 15 between'the walls 1d of the trigger mount is a conventional form of trigger 16, which is spring tensioned as at 17. Mounted upon the trigger and secured thereto by means of a screw 18 is a trip support 19. The trigger 16has a shoulder 20, between which and the trip support 19 a swivel 21 is pivotally mounted as at 22. Projecting from one side of the sear trip is an apertured lug or ear 23. The trip comprises a pair of arms which slightly diverge, and the arm 24 is adapted to engage and trip the right hand sear 4, while the arm 25 of the trip is adapted to engage and trip the left hand sear. Disposed between the arms 2 k and 25 of the trip is the folded or looped end 26 of a leaf spring, the diverging arms 27 of this spring having curved shoulders and being adapted to ride over the adjacent edges of the inwardly projecting se 1' lugs 28 and 29, when the trigger is pulled and the setting device is set for firing either the right hand or left hand barrel.

In Figure 6, I show the sear trip 22' swung over so that it will engage and trip the sear 4 when the trigger is pulled, and it will be noted that the left hand arm of the spring 27 bears against the lug 28 and extends inward over the upper face of the lug and then upward and'outward. Therefore, when the trigger is actuated and the sear i is tripped, the sear will move upward and, during downward movement of the trigger engagin the corresponding arm of the spring 2 will act to swing the trip 22 over toward the right in Figure 6, that is in the position shown in Figure 7, and after either barrel has been fired and the trigger released the trip is automatically swung to a position to cause the firing of the other barrel upon the next-or successive pull of the trigger. In Figure 7 the trip 22 has been swung over to the right, that is into.

position to engage with the lug 29 of the sear 5 by the proper setting of the slide 44:, and when the trigger is pulled the arm 25 of the trip 22 will engage the lug 29 and trip the sear, and the upward movement of the sear contacting with the upper end of the corresponding arm of spring 27 will shift the trip over to the position shown in Figure 6. Thus the first barrel is fired by manually setting the sear trip through the action of the slide 45f, but the other barrel is fired automatically upon a successive pull on the trigger.

The body of the trigger at its rear end is provided with a laterally extending pin or lug 30, which contacts with the upper surface of the lower wall of the breech casing, to limit the trigger in its downward movement. This lug or pin is also adapted to cooperate with a safety device, when the safety device is set or moved in its path, to prevent the trigger from being pulled.

Rising from the lower wall of the breech casing is a support 31 on which a trip actuati119; member is pivotally mounted as at 33. The trip actuating member 32 comprises three arms 34. and 36. The arm 34 extends downwardly. and is adapted to be moved into the path of the lug or pin 30 when the actuating member is set at safety to prevent the trigger from being pulled. This arm 34 may also be moved forwardly of the pin or lug 30, to permit the trigger to be pulled, to cause the trip to swing laterally to carry the left hand arm of the trip beneath with the inwardly projecting sear lug of the left hand sear, whereby the left hand hammer may be actuated. The arm 34 of the safety device may also be disposed rearwardly of the lug or pin 30. to cause the right hand arm of the trip to be disposed beneath the inwardly projecting sear lug of the right hand sear, thereby permitting the right hand hammer to be actuated.

The arm 36 of the actuating member extends rearwardly andis provided with a lateral lug 37, in an aperture of which by means of a holding pin 38 a small resilient rod in the nature of a hair spring 39 is secured. One end of this spring 39 engages through the aperture of the lateral ear or lug 23 of the trip. The arrangement of this spring is such that when the arm 34 of the trip actuating member is set to the rear of the lug or pin 30, the spring is so tensioned as to tilt the trip to the right. whereby the right hand arm of the trip will be disposed beneath the inwardly projecting sear lug of the right hand sear, allowing the right hand sear to actuate the right hand hammer. When the trip actuating member is moved so that the arm 34is in advance of the lug or pin 30, the hair spring is placed under tension and acts upon the trip as to cause the trip to tilt toward the left, whereby the left hand arm thereof be disposed beneath the inwardly projecting sear lug of the left hand sear. in readiness to actuate the same, and the left hand hammer. The aperture of the lateral lug 23 is large enough to permit the hair spring to loosely engage therein. and it is to be noted that when the tripactuating member is set so that the arm 34 is to the rear of the lug 30, the end of the hair spring engages the lower portion of the wall of the aperture. lVhen the trip actuating member is set so that the arm 34 is in advance of the lug 30, the end of the hair spring bears against the upper portion of the wall of the aperture of the lug 23, thereby causing the trip to tilt to the left.

The safety slide bar 11 is mounted adjacent the under surface of the upper wall of the breech casing, and its forward end 40 engages a guide groove 41 in the casing, with said end 40 just in the rear of the slide bar 10, which is actuated by the shoulder 9 of the lock. The safety slide bar 11 at its rear end has an upwardly extending arm 42, which engages in a slot 43 in the upper wall of the breech casing. Carri d by and preferably forming an integral part of the arm 42 is a thumb actuated setting slide 44 provided with teeth 45. This slide covers the slot 43, and has at one end a circular opening 46. Engaged or otherwise applied to the outer surface of the breech casing are the letters R, S and L. R stands for the right barrel, L for the left barrel and S (which is intermediate R and L) stands for safety. These letters are in alignment, so that when the slide is moved forwardly, the letter R is visible through the opening 46, indicating that the right hand barrel may be fired. WVhen the slide is moved rearwardly sufficiently to permit the letter S to be visible through the opening 46, the trip actuating member 32 which is pivotally connected to the safety slide bar 11 is moved, so that the lower end of the arm 34 will lie in the path of the lug or pin 30, and thereby prevent the trigger from being actuated. Obviously the letter S stands for safety. and when the thumb slide is so positioned so that the letter S appears through the opening 46, the trigger is latched, and cannot be pulled.

l/Vhen the thumb slide is moved further rearwardly in order to permit the letter L to be visible through the opening 46, it is indicated that the left hand barrel is free to be fired, and when in this position the arm 34 is in advance of the lug or pin 30, hence permitting the trigger to be pulled.

Projecting downwardly from the safety slide bar 11 is a pair of spaced lugs 47, between which a lateral pin 48 is: positioned. This pin 48 is carried by the arm 35 of the trip actuating member, and hence is positioned between the lugs 47 which provides a loose pivotal connection between the safety slide bar 11 and the actuating member. In other words when the safety slide bar 11 is moved, the trip actuating member is tilted on its pivot, in order to position the arm 34 in advance of or to the rear of the lug or pin 30. or in the path of said pin or lugBO.

In order to hold the safety slide bar 11 in different adjusted positions a leaf spring 49 is secured 50 to the under surface of he upper wall of the breech casing. This leaf spring is forked or bifurcated, whereby its arms may straddle the upwardly projecting part 42 of the safety slide bar 11.

The arms 51 of the leaf spring are bent to provide projecting lugs 52 and 53, defining a notch 5% between the lugs 52 and 53. The safety slide bar at a point immediately adjacent the under surface of the upper wall of the breech casing carries a transverse pin the projecting ends of which are designed to cooperate with the notch 54, or upon the remote faces of the lugs 52 and 53. In other words when the thumb slide l i is moved to position the arm 34 in the path of the lug 30, the projecting ends of the pin 55 will engage the corresponding notches 54; of the arms of the leaf spring 49. When the thumb slide moved so that th letter R is visible through the opening 46, the projecting ends of the pin 55 will engage the forward walls of the lugs 52 of the arms of the leaf spring d9. When the thumb slide is moved rearwardly, permitting the letter L to be visible through the opening 46 indicating the firing of the left hand barrel, the projecting ends of the pin 52 will engage the rear walls of the lugs 53. By this construction of .leaf spring including the lugs and the notch 54: the trip actuating member may be held set in its tnree different positions, namely safety, for firing the right hand barrel, and for firing the left hand barrel.

Projecting upwardly and curved slightly rearwardly from the body of the trigger is an arm Carried by the support 31 which rises from the bottom of the breech casing is a journal or screw 57, upon which is fulcrumed a cam shaped inertia actuated eccentrically pivoted weight 58. This weight is designed purposely for locking the trigger in an actuated position, to prevent what is termed double firing or balking. The weight may be any suitable shape, preferably approximately sectorshaped, and the body thereof is normally positioned so that its chordal face will extend rearwardly and upwardly, substantially at a angle. Projecting laterall from the support 31 is a headed stud 59 with which the edge portion of the weight contacts to limit the weight. or trigger holding dev" in its normal position. The weight or trigger holding device has a notch (31, and engaged in an aperture (32 of one wall of this notch a hair spring 63. This hair spring is coiled about the fulcrum or journal 57, and is attached thereto in any suitable manner as indicated at 64. The head of the limiting stud 59 overlies a portion of this hair spring, and acts to re tain the convolutions substantially in alignment, and keep them from spreading, as well as from being diverged. As previously stated the weight 58 is held in its normal position by contact with the limiting stud 59.

In order to load the gun, it is first unlocked by moving the lever 12, then the gun is broken, and when broken the hammers are set in the usual manner. When moving the lever 12 to unlock the breech casing, the shoulder t) of the lock will act upon the slide bar it). which in turn will contact with and move the safety slide bar 11, provided the thumb slide 4% has been shifted toward the muzzle to its full extent and the arm 3% of the safety device is thus positioned rearwardly of the lug 30. v hen the safety slide bar 11 is so moved, it will cause the sear operating member to be positioned, so that its arm 34 will lie in the path of the lug 30, and thereby prevent the trigger from being pulled, and thereby prevent the hammers from tripping and firing the shells.

After the gun is loaded and closed, and it is desired to fire the right hand barrel, the setting slide is moved so that the arm 34- of the sear trip actuating member is positi ned rearwardly of the lug 30, in which case the sear trip will tilt to the right, and its right hand arm will contact with and move the right hand soar, and release the right hand hammer upon the trigger being pulled. The upward movement of the right hand sear due to the pull of the trigger and the release of the sear will cause the trip to tilt to the left as to carry its left hand arm beneath the left hand sear and a successive pull upon the trigger will then lire the left barrel. In order to fire the left hand barrel first, the set-ting slide at is moved rearwardly, until the arm 84 is positioned forvardly of the lug or pin 30 thus tilting the trip to the left and beneath the left hand sear. lVhen the trigger is pulled the trip will cause the left hand. sear to be actuated, thus tripping the left hand hammer. After the trigger is so pulled, it is then released, and then again pulled allowing the right hand barrel to be fired. The firing of either barrel first depends on the position of the setting slide i l.

Normally the inertia actuated weight 58 is held in a retracted position and against the head of the stud 59 by the action of the spring (53. The weight. is capable, however, of oscillating "from this position ioa position beneath the tail 5(3 of the trigger when the trigger is pulled as shown in Figure 5 and the gun is fired In this position the weight as a stop preventing double firing. hen the trigger is pulled to fire the gun, the tail moves upward with the trigger and at the same instant the recoil of the gun throws the weight forward in the position shown in Figure 5 and behind the tail 56 of the trigger. lVhen the gun kicks or reooils, as a rule the finger of the operator relaxes on the trigger and consequently the trigger will tend to move or will move toward its normal position and then upon a rebound the finger of the operator tightens on the trigger and then without intention the other barrel is fired.

It will be obvious that with my construction the weight 58 will swing forward under inertia when the gun is fired into the position shown in Figure 5 or immediately beneath the tail of the trigger, which will thus prevent the trigger from returning to its normal position as a result of relaXing the finger pressure on the trigger. Therefore, upon the recoil of the gun and the consequent involuntary contraction of the muscles of the finger on the trigger, there will be no release of the untripped hammer. The upward movement of the tail 56 due to this involuntary contraction of the muscles of the finger will release the weight 58 and the spring 63 will then act to return the weight to its normal position or that shown in Figure 1 so to permit the trigger to be again actuated to fire the second barrel.

The particular advantages of this construction are the simplicity of the parts, the positive action thereof, and the actuation of the sear selecting mechanism by means of a longitudinally shiftable setting slide mounted upon the breech casing of the gun in such position that it may be readily engaged by the thumb. A further advantage of the construction is that the operator does not have to see that the slide 44 is disposed at its safety position before operating the barrel lock 12 in order to break the gun to open it, but that it is only necessary to shift the slide 44 to its full forward position and then upon actuating the locking member 12 the member 32 will be shifted automatically to a position to lock the trigger against upward movement and it will retain this position after the barrel and breech casing have been brought back into proper relation and locked and until the slide 44 is again shifted to fire either the left barrel or the right barrel. Of course, if the slide 4% is shifted back to a position where it will fire the left barrel, that is to a fully retracted position, there will be no automatic locking of the trigger mechanism when the lock 12 is shifted but it will be obvious that it is not necessary to look at the slide 4-4: to see whether it is in its safety position in unlocking the barrels but onl to shift the slide fully forward, which is a habit very readily acquired.

It will further be seen that the recoil lock constituted by the weight 58 is very readily operated by reason of the weight being rotatably mounted eccentric to its axis and normally disposed with the greater portion of the weight aboveits axis so that upon a recoil of the gun the weight easily and quickly shifts to the position shown in Figure This construction is such that the spring 63 may be verydelicate and fine and in the nature of a' hair spring, whereas in other constructions known to me the spring is relatively heavy so that the weight is not delicately poised enough to operate quickly and positively when the gun is fired and under the recoil. Furthermore, it will be seen that with my construction the raising of one or the other'of the sears to fire one or the other barrel automatically acts to shift the sear tripping mechanism to a position beneath the other sear.

While I have illustrated an embodiment of my invention which I have found to be thoroughly effective for the purpose i1rtended, I do not wish to be limited thereto as it is obvious that many changes might be made in the details of construction and arrangement of parts without departing from the spirit of the invention.

The invention having been set forth, what is claimed is 1. In a single trigger mechanism for double barrel guns, a breech casing, a pair of sears, one for each barrel, a trigger, a sear trip pivotally mounted upon the trigger for transverse oscillation from a position between the sears to a position beneath either sear, a longitudinally movable setting slide mounted upon the breech casing, an oscillatable member mounted within the breech casing and having an arm operatively connected to the sear trip to shift the sear trip in one direction or the other, and an operative connection between the setting slide and said member to oscillate the latter.

2. In a single trigger mechanism for double barrel guns, a breech casing, a pair of sears, one for each barrel, a triggeix a sear trip pivotally mounted upon the trigger for transverse oscillation from a position between the sears to a position beneath either sear, a longitudinally movable setting slide mounted upon the breech casing, an oscillatable member mounted within the breech casing and having an arm operatively connected to the sear trip to shift the sear trip in one direction or the other, and an operative connection between the setting slide and said member to oscillate the latter, said oscillatable member having an arm movable into position immediately above a portion of the trigger when the slide is shifted to a safety position.

3. In a single trigger mechanism for double barrel guns, at breech casing, barrels hinged to the breech casing, a lock for the barrels. a pair of sears, one for each bar rel, a trigger, a sear operating mechanism coacting with the trigger including a trip pivoted to the trigger for transverse oscillation from a position between the scars to a position beneath either sear, an oscillatable member mounted within the breech casing and having operative connection to the sear triplto shift it as said member is oscillated, a setting slide mounted for longitudinal movement upon the exterior of the breech casing and operatively connected to said member to oscillate it, said setting slide being movable from an intermediate position to a position to set the trip to actuate either sear, said oscillatable member having an arm engaging over a portion of the trigger to lock the trigger from actuation when the trip is in its intermediate position and the setting slide is in its intermediate position, and means actuated by the opera tion of the barrel lock acting to shift the. trip actuating member and the trip to their intermediate or safety positions if the slide be shifted to its full extent toward the muzzle of the gun.

4. In a single trigger mechanism for double barrel guns, a pair of sears, a trigger, a sear tripping mechanism coacting with the trigger and including a trip pivotally mounted upon the trigger for transverse oscillation from. a position between the sears to a position beneath either sear, said trip having upwardly diverging springs operatively connected thereto, each of said springs being adapted to bear against and extend at an inclination above the sear for which the trip is set whereby to cause the trip to automatically swing into engagement with the other sear after the sear for which the trip is set has been actuated and the trigger released, and manually operable means for setting the trip to a position of operative relation to a selected sear.

5. In a single trigger mechanism for double barrel guns, a pair of sears, a trigger, a sear operating mechanism coacting with the trigger including a trip pivoted to the trigger for transverse oscillation, said trip having upwardly diverging arms and upwardly diverging springs having less divergence than the arms, the upper ends of said springs being bent outward and upward and adapted to overlie a portion of the sear when the corresponding arm is be low said portion of the searwhereby to cause a lifted sear to automatically shift the trip into a position of operative relation to the other sear upon release of the trigger, and manually operable means for shifting the trip from an intermediate position be tween both sears to a position with one or the other of its arms beneath one or the other sear.

6. In a trigger mechanism and lock there for, operating sears, a trigger, and a trip mounted upon the trigger, for actuating one or the other of said sears, revoluble means oscillatable forwardly upon a pull on the trigger and the recoil of the gun and oscillatable backwardly upon the rebound, thereby preventing double firing, and a safety appliance having means disposable in the path of a portion of the trigger to prevent actuation of the same, said safety appliance including a resilient member operatively connected with the trip, for so tensioning the same as to direct it toward one or the other of the sears for operating the same. 7

7. In a single trigger mechanism for double barrel guns, a pair of sears, a trig ger, a sear operating mechanism coacting with the trigger including a trip pivoted to the trigger for transverse oscillation from a position between the sears to a position beneath either sear, an oscillatable trip actuating member having an arm, a resilient rod rigidly connected to said arm at one end, the trip having an eye through which said rod loosely passes whereby upon an oscillation of said actuating member the resilient rod will be placed under tension to urge said trip to its intermediate position or to positions to engage either the right or left hand sear, and manually shiftable means for oscillating said actuating member.

8. In a single trigger mechanism for double barrel guns, a breech casing, barrels operatively hinged thereto, a lock for the barrels, a trigger, a sear operating mechanism coacting with the trigger including a trip pivoted to the trigger for transverse oscillation from a position between the sears to a position beneath either scar, an actuating mechanism for the trip comprising an oscillatable member having a plurality of arms, one of said arms being operatively connected to the trip -to shift it as the actuating member is oscillated, another arm being movable into position immediately above a portion of the trigger when the trip is in its intermediate position, a slide mounted upon the exterior of the breech casing and operatively connecton to another arm of said actuating member to shift it as the slide is shifted, said slide having a longitudinally extending portion disposed immediately beneath the top of the breech casing, means for automatically shifting said slide from an extreme position toward the muzzle to its intermediate or safety position comprising a longitudinally shiftable member shiftable rearward upon an unlocking movement of the barrel lock, and meansyieldingly holding the slide in any of its shifted positions.

9. In a trigger mechanism and lock therefor, )eratin'g sears, a trigger, a trip operatively mounted upon the trigger to oscillate into a position beneath one or the other of the sears, a setting appliance including means dis'posab'le in the path of a part of the trigger to prevent actuation of thesame, said setting appliance having spring tensioned operative connections with the trip for so tension'ing the same as to direct it toward one or the other of the sears.

10. In a trigger mechanism and lock therefor, operating sears, a trigger, a trip operatively mounted upon the trigger to oscillate into a position beneath one or the other of the sears, a setting appliance including means disposable in the path of a part of the trigger to prevent actuation of the same, said settingappliance having spring tensioned operative connections with the trip for so tensioning the same as to direct it toward one or the other of the sears, and means for holdin the safety appliance in different adjusted positions.

11. In a trigger mechanism and lock therefor, operating sears, a trigger, a trip operatively mounted upon the trigger to oscillate into a position toward one or the other of the sears, a setting appliance including means disposable in the path of a part of the trigger to prevent actuat on of the same, said setting appliance having spring tensioned operative connections with the trip for so tensioning the same as to direct it toward one or the other of the sears, said trigger having an arm, and a revoluble means revoluble forwardly in the path of said arm of the trigger upon a pull on the trigger and the ar of the gun, thereby retaining the trigger raised, said means being revoluble rearwardly upon the rebound, removing from the path of the arm, and thereby permitting the release of the trigger, and avoiding double firing.

12. In a single trigger mechanism for double barrel guns, a trigger having a tail and means for preventing double firing comprising a sector-shaped weight pivoted adjacent its chordal line, a spring yieldingly holding the weight in a retracted position and with the chordal edge face of the weightfacing downward, the weight swinging to'a position beneath the tail when the trigger is pulled and the gun discharged, the spring then acting to re tract the weight to its normal position.

13. In a single trigger mechanism for double barrel guns, a trigger having a tail and means for preventing double firing comprising a pivoted inertia operated weight having the form of a sector, the pivot for the weight being disposed adjacent the chor dal face of the sector and this face facing downward, a coiled spring attached at one end to the weight to oscillate it and having its other end fixedly attached, the spring acting to hold the weight in its normal position, the weight swinging to a position beneath the tail when the trigger is pulled and the gun discharged.

14. In a single trigger mechanism for double barrel guns, a pair of sears, a trigger, a sear trip shiftable upon the trigger to positions where it is engageable with either of said sears upon movement of the trigger, selective mechanism for shifting the trip to either of said positions and holding the same therein, a pair of springs associated with said trip, the operation of either of said sears placing the tension of one of said springs against said trip to shift the same from a position for engagement with the actuated sear to a position for engagement with the other of the sears against the action of said selective mechanism.

15. In a single trigger mechanism for double barrel guns, a pair of sears, a trigger, a sear trip shift-able upon the trigger to posit-ions where it is engageable with either of said sears upon movement of the trigger, se lective mechanism for shifting the trip to either of said positions and holding the same therein, a pair of springs associated with said trip, the operation of either of said sears placing the tension of one of said springs against said trip to shift the same from a position for engagement with the actuated sear to a position for engagement with the other of the sears against the action of said selective mechanism, said selective mechanism being operative to effect a change of selection at any time.

16. In a single trigger mechanism for double barrel guns, a pair of sears, a trigger, a sear trip shiftable upon the trigger to positions where it is engageable with either of said sears upon movement of the trigger, selective mechanism for shifting the trip to either of said positions and holding the same therein, a pair of springs associated with said trip, the operation of either of said sears placing the tension of one of said springs against said trip to shift the same from a position for engagement with the actuated sear to a posit-ion for engagement with the other of the scars against the action of said selective mechanism, said selective mechanism being inoperative to effect the positioning of the trip for engagement with the sear which is in operated position.

17. In a single trigger mechanism, for double barrel guns, apair of sears, a trigger, a scar trip shiftable upon the trigger to positions where it is engageable with either of said sears upon movement of the trigger, selective mechanism for shifting the trip to either of said positions and holding the same therein, a pair of springs associated with said trip. the operation of either of said sears placing the tension of one of said springs against said trip to shift the same from a. position for engagement with the actuated sear to a position for engagement with the other of the sears against the action of said selective mechanism, said selective mechanism being operative to effect a change of selection at any time and being inoperative to effect a positioning of the trip for engagement with a sear which is in operated position.

18. In a single trigger mechanism for double barrel guns, a pair of sears, a trigger, a scar trip shiftable upon the trigger to positions where it is engageable with either of said sears upon movement of the trigger, selective mechanism for shifting the trip to either of said positions and holding the same therein, a pair of springs associated with said trip, the operation of either of said sears placing the tension of one of said springs against said trip to shift the same from a position for engagement with the actuated sear to a position for engagement with the other of the sears against the action of said selective mechanism, said selective mechanism being operative to effect a change of selection at any time and being inoperative to effect a positioning of the trip for engagement with a scar which is in operated position.

19. In a single trigger mechanism for double barrel guns, operating sears, a trigger, a trip operatively mounted upon the trigger to oscillate into a position beneath one or the other of the scars, a setting ap pliance having spring-tensioned operative connection with the trip for so tensioning the same as to directvit toward one or the other of the sears, a pair of springs associated with said trip, the operation of either of said sears placing the tension of one of said springs against said trip to shift the same from a position for engagement with the actuated sear to a position for engagement with the other of the sears against the action of the spring-tensioned operative con nection of said selective mechanism.

20. In a single trigger mechanism for double barrel guns, operating sears, a trigger, a trip opcrativcly mounted upon the trigger to oscillate into a position beneath one or the other of the sears, a setting appliance having springtensioncd operative connection with the trip for so tensioning the same as to direct it toward one or the other of the scars, a pair of springs associated with said trip, the operation of either of said sears placing the tension of one of said springs against said trip to shift the same from a position for engagei'nent with the actuated sear to a" position for engagei'nent with the other of the scars against the action of the s ring-tensioned operative connection of said selective mechanism, said selective mechanism being operative to effect a change of selection at any time.

21. In a single trigger mechanism for double barrel guns, operating sears, a trigger, a trip operatively mounted upon the trigger to oscillate into a position beneath one or the other of the sears, a setting appliance having spring-tensioned operative connection with the trip for so tensioning the same as to direct it toward one or the other of the scars, a pair of springs associated with said trip, the operation of either of said sears placing the tension of one of said springs against said trip to shift the same from a position for engagement with the actuated sear to a position for engagement with the other of the scars against the action of the s1: ring-tensioned operative connection of said selective mechanism, said selective mechanism being inoperative to effect the positioning of the trip for engagement with the sear which is in operated position.

22. In a single trigger mechanism for double barrel guns, operating sears, a trigger, a trip operatively mounted upon the trigger to oscillate into a position beneath one or the other of the scars, a setting appliance having spring-tensioned operative connection with the trip for so tensioning the same as to direct it toward one or the other of the sears, a pair of s1 rings associated with said trip, the operation of either of said sears placing the tension of one of said springs against said trip to shift the same from a position for engagement with the actuated sea-r to a position for engagement with the other of the sears against the action of the spring-tensioned operative connection of said selective mechanism, said selective mechanism being operative to effect a change of selection at any time and being inoperative to effect positioning of the trip for engagement with a sear which is in operated position.

23. In a single trigger mechanism for double barrel guns, operating sears, a trigger, a trip operatively mounted upon the trigger to oscillate into a position beneath one or the other of the scars, a setting appliance having spring-tensioned operative connection with the trip for so tensioning the same as to directit toward one or the other of the scars, a pair of springs associated with said trip, the operation of either of said sears placing the tension of one of said springs against said. trip to shift the same from a position for cngagen'ient with the actuated sear to a position for engagement with the other of the scars against the action of the spring-tensioned operative connection oi said selective mechanism, said selective mechanism being operative to effect a change of selection at any time, positioning of the trip by the selective mechanifnn for engagement with the sear which is in operated position being prevented by the spring ren- ,dered operative by the movement of said. sear to operated position.

24:. In a single trigger mechanism for double barrel guns, operating sears, a trigger, a trip operatively mounted upon the trigger to oscillate into a position beneath one or the other of the sears, a setting appliwith the other of the sears against the action 10 of the spring-tensioned operative connection of said selective mechanism, the setting mechanism including means disposable in the path of part of the trigger to prevent actuation of the same.

In testimony whereof I hereunto affi'x my signature.

ELMER E. LflLLER. 

